THUAN ONG (MD, MPH) – Geriatric Medicine (Internal Medicine) Physician, NPI 1801872635
Geriatric Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
107 GERIATRIC MEDICINE in WA
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Provider Addresses for THUAN ONG (MD, MPH)
PO BOX 50095
SEATTLE, WA 981455095
Phone: (206) 543-6420
Type: Mailing
Harborview Medical Center, 325, 9th Avenue, Little Saigon, First Hill, Seattle, King County, Washington, 98104, United States
SEATTLE, WA 981042420
Phone: (206) 744-4191
Fax: (206) 744-8527
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2009-08-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090807000204 | I | Geriatric Medicine | WA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99306 | Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 259 | 242 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 168 | 129 | $0 |
| 99310 | Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 84 | 69 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 80 | 32 | $0 |
| 99305 | Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 67 | 64 | $0 |
Insurance plans in this area (ZIP 98145)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| H E M A T O L O G Y | WA | |
| Infectious Disease | OR | |
| - | WA | |
| - | WA | |
| Family Practice | WA | |
| - | WA | |
| - | WA | |
| - | WA | |
| - | WA | |
| - | WA |
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